The Twins have now officially opened a public sale on the signed baseball, where fans will be able to bid for the prize through Valentine's Day (February 14).

Proceeds from the auction will benefit the Minnesota Twins Community Fund.

Twins director of public affairs Kevin Smith said of the auction: "We have as far as we know, a one-of-a-kind item â€“ a baseball with both of their signatures which we believe is best used to raise incremental funds for the good works of the Community Fund."